Special Construction Circuit Breakers

Special Calibration, VIsi-Blade, Moisture/Fungus Treatment,
and Short LA/LH Handle

Special Magnetic or Thermal Calibration

Magnetic

The magnetic trip ranges for standard circuit breakers are listed in the Square D Digest. Requirements outside this range are best accommodated by selecting another standard circuit breaker. In some cases where this is not practical, a circuit breaker may be ordered with special magnetic calibration. Special magnetic calibration is not possible in all cases. Circuit breakers with special magnetic calibration and an adjustable magnetic trip range are not UL Listed; those with a fixed magnetic trip setting are UL Listed. Consult Square D/Schneider Electric local sales office for more information.

50 Degrees C

UL 489 Listed molded case circuit breakers are calibrated for 40 degree C ambient temperature. To meet requirements of higher ambient conditions, circuit breakers can be factory calibrated for a 50 degree C ambient temperature. Circuit breakers with special thermal calibration are not UL Listed. To order, consult local sales office for more information.

Visi-BladeTM Circuit Breakers

(20% Price Adder)
Visi-blade construction is a modification to the cover of a thermal-magnetic circuit breaker, a molded case switch, or a Mag-Gard® circuit breaker which provides a “window” through which the position of the movable contacts can be verified. Luminescent paint is applied to the movable contact arms to clearly indicate their position. Gases produced during high level interruption may cause clouding of the Visi-blade window. Visi-Blade circuit breakers listed below are UL Listed except for FH circuit breakers. Visi-Blade construction is not available on circuit breakers not included in table below.

Add suffix letter “V” to the circuit breaker catalog number, i.e., FAL 36100V.

Table 3.49:

Available Visi-blade Circuit Breakers

Circuit Breaker Prefix

15–100 A

70–250 A

125–400 A

300–1000 A b

a	FH circuit breaker is not UL Listed.

b	I-Line@ 800 A maximum, unit mount 1000 A maximum.

c	Not available on 1P FA/FH circuit breakers.

Moisture and Fungus Resistant Treatment for Circuit Breakers

(20% Price Adder)

This treatment covers the application of moisture and fungus resistant varnish to circuit breakers and molded case switches.

●	The varnish meets Military Specification MIL-V-173C VARNISH, MOISTURE AND FUNGUS RESISTANT.

●	The treatment meets military Specification MIL-T-152E TREATMENT, MOISTURE AND FUNGUS-RESISTANT, OF COMMUNICATIONS, ELECTRONIC, AND ASSOCIATED ELECTRICAL EQUIPMENT.

The treatment of circuit breakers in accordance with said specifications is intended to protect them against the moisture and fungus condition encountered in service by retarding the absorption of moisture and inhibiting the growth of fungi.

To order for F-, K-, L- and M-frame circuit breakers, place the suffix “FT” at the end of the circuit breaker catalog number, e.g., FAL36100 becomes FAL36100FT. To order for QB, QD, and QG circuit breakers, place the suffix “YF” at the end of the circuit breaker catalog number, e.g., QDL32150 becomes QDL32150YF. ED, EG, EF, GJL, PowerPact® D-, H-, J-, M-, P- and R-frame circuit breakers are inherently fungus resistant and need no further treatment.

Short Handle for LA/LH Circuit Breakers (No Additional Charge)

Certain applications of the LA/LH circuit breakers (as mains in particular panelboards) require the use of a slightly shorter operating handle. For ordering information refer to the chart below.

Table 3.50:

Catalog Numbers for Short Handle LA/LH CIrcuit Breakers

Lug Configuration Desired


DE2	Discount Schedule

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